Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 131: Which of the following correctly describes the energy changes in the generation of light by a hydroelectric power station? Options:
  A) Electrical $\to$ mechanical $\to$ potential
  B) potential $\to$mechanical $\to$electrical $\to$ light
  C) mechanical $\to$ sound $\to$ electrical $\to$ light
  D) kinetic $\to$ mechanical $\to$ electrical $\to$light
  Show Answer
  The correct answer is B .
• Question 132: Two balls X and Y weighing 5 g and 50 kg respectively were throne up vertically at the same time with a velocity of 100 ms¹ .How will their positions be one second later? Options:
  A) X and Y will be 500 m from each other
  B) Y will be 500 m ahead of X
  C) X will be 500 m ahead of Y
  D) X and Y both be 500 m from the poin of throw
  Show Answer
  The correct answer is D .
• Question 133: Radio carrier waves are generated by causing electrons to oscillate rapidly in Options:
  A) a microphone
  B) a television camera
  C) an antenna
  D) coaxial cables
  E) a transmitter
  Show Answer
  The correct answer is E .
• Question 134: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 135: An object 3.0cm high is placed 60.0cm from a converging lens whose focal length is 20.0cm. Calculate the size of the image formed Options:
  A) 0.5cm
  B) 1.5cm
  C) 2.0cm
  D) 6.0cm
  Show Answer
  The correct answer is B .
• Question 136:

  The density of a solid is defined as the

  Options:
  A) mass of the solid compared to the mass of an equal volume of water
  B) amount of water displaced when a unit mass of thesolid is immersed in it
  C) weight per unit volume of the solid
  D) volume per unit mass of the solid
  E) mass per unit volume of the solid
  Show Answer
  The correct answer is E .
• Question 137:

  

  In the diagram shown, which of the simple pendulum will resonate with P when set into oscillation?

  Options:
  A) U
  B) T
  C) R and T
  D) Q and R
  Show Answer
  The correct answer is B .
• Question 138: A bead traveling on a straight wire is brought to rest at 0.2m by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1 determine the work done by the friction Options:
  A) $2\times {10}^{-4}J$
  B) $2\times {10}^{-3}J$
  C) $2\times {10}^{1}J$
  D) $2\times {10}^{2}J$
  Show Answer
  The correct answer is B .
• Question 139: What optical instrument can best be constructed with converging lenses of focal lengths 50cm and 5cm? Options:
  A) Compound microscope
  B) Galileo's telescope
  C) Terrestrial telescope
  D) Astronomical telescope
  Show Answer
  The correct answer is D .
• Question 140: If the angle of declination in a place is 10^oE, calculate the true geographic bearing if the compass reads N40^oE Options:
  A) N50^oE
  B) N40^oE
  C) N30^oE
  D) N25^oE
  Show Answer
  The correct answer is C .